unofficial
Britishadjective
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not official or formal
an unofficial engagement
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not confirmed officially
an unofficial report
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(of a strike) not approved by the strikers' trade union
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(of a medicinal drug) not listed in a pharmacopoeia
Other Word Forms
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A community garden has replaced a drug market, a library stands where an unofficial dumping ground once accumulated milk crates, and formerly deserted blocks now have families moving in.
From The Wall Street Journal ● Aug. 17, 2026
Wales fans made a lasting impression in France, with their distinctive bucket hats and chant of 'Don't Take Me Home', which became an unofficial anthem of the Euros.
From BBC ● Aug. 4, 2026
After the mayoral primary, Robb transitioned to a role as an unpaid, unofficial advisor to the mayor, her office said.
From Los Angeles Times ● Aug. 2, 2026
Part of their unofficial relationship homework involves field missions that spark heated conversations about masculine insecurity and Diarra’s conflicted desires about motherhood.
From Salon ● Aug. 1, 2026
The unofficial and true story involved a Bog Monster following him and Sheed home after they uncovered an eldritch patch of swamp deep in the Gnarled Forest.
From "The Last Last-Day-of-Summer" by Lamar Giles
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
